Ocean Script - Why Vth keep the same by using ocean script

[arbil]

Hi all,

I am trying to use ocean to print Vth-Length waveform. What i do is to use ocean to submit a series simulations with dc OP simulation, and then open each result and print the vth value.
But vth value keep the same with my script. When i run this script, vth_nm or vth_pm is always a same value. But if i open each sim result from ADE calculator and print vth, it is correct for each length. I don't know why vth_nm and vth_pm keep unchanged by this ocean script.

Is it environment problem or script problem?

Script:
length_list = list(0.18u 0.3u 0.5u 0.7u 1u 1.5u 2.5u 5u 7u 10u )
corner_list = list("tt" "ff" "ss")

p0 = outfile("/vth.txt" "w")
fprintf(p0 "%s %s %s %s \n" "corner" "length" "vth_n" "vth_p")

foreach(cornervalue corner_list
foreach(lengthvalue length_list

sprintf(job, "%s_%2.2f" cornervalue lengthvalue*1e6)
sprintf(results_dir, /simulation/tb_Vth/spectre/schematic/%s/psf" job)

openResults(results_dir t)
selectResult( 'dcOp)

vth_nm = OP("/M0","vth")
vth_pm = OP("/M1","vth")

fprintf(p0 "%s %2.2f %2.3f %2.3f \n" cornervalue lengthvalue*1e6 vth_nm vth_pm)
clearAll()
))
close(p0)

 

[oermens]

doesn't look like you're actually running a simulation. wheres you analysis() statement?

 

[arbil]

I already run the sims under same directory as the path defined above, which i can use ADE calculator to print Vth for each sim correctly. I try to use ocean script to collect Vth for each sim, to make a vth-L plot. But it dosen't work since the vth_ns and vth_ps value is always the first sim value and never changed again in later processing.

Thanks

 

[arbil]

Anyone can help? thanks

I already run the sims under same directory as the path defined above, which i can use ADE calculator to print Vth for each sim correctly. I try to use ocean script to collect Vth for each sim, to make a vth-L plot. But it dosen't work since the vth_ns and vth_ps value is always the first sim value and never changed again in later processing.

Thanks

 

[JoannesPaulus]

Unless you want your output file to be written at root, change "p0 = outfile("/vth.txt" "w")" into "p0 = outfile("./vth.txt" "w")". Moreover, I would change the following lines:

sprintf(job, "%s_%2.2f" cornervalue lengthvalue*1e6)
sprintf(results_dir, /simulation/tb_Vth/spectre/schematic/%s/psf" job)

into:

job=sprintf(nil "%s_%2.2f" cornervalue lengthvalue*1e6)
results_dir=sprintf(nil, /simulation/tb_Vth/spectre/schematic/%s/psf" job)

The rest of the code seems ok, not knowing your result directory structure.

 

[arbil]

Thank you for your suggestion of coding any way. Is there any benefit to replace sprintf(t "*") with t=sprintf(nil "*") ?

Thanks~

 

[JoannesPaulus]

Were you able to fix the problem?

Is there any benefit to replace sprintf(t "*") with t=sprintf(nil "*") ?

I had some problems years ago with the first format and never used it again.